Subtraction with Regrouping

Front

What is subtraction with regrouping?

Back

Subtraction with regrouping is a method used to subtract numbers when the top digit is smaller than the bottom digit in any column, requiring us to borrow from the next column.

Tags

CCSS.7.NS.A.1C

Front

How do you borrow in subtraction?

Back

To borrow, you take 1 from the next left column, reducing it by 1, and add 10 to the current column to make it easier to subtract.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the first step in solving 346 - 137?

Back

The first step is to line up the numbers by place value: 346 on top and 137 below it.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What do you do if the top digit is smaller than the bottom digit in the ones place?

Back

You need to borrow from the tens place to make the top digit larger.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 346 - 137. What is the answer?

Back

209

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the second step in solving 961 - 223?

Back

After lining up the numbers, subtract the ones place first, then the tens place, and finally the hundreds place.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 961 - 223. What is the answer?

Back

738

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What happens if you need to borrow from the hundreds place?

Back

You reduce the hundreds place by 1 and add 10 to the tens place.

Tags

CCSS.2.NBT.B.7

Front

Solve: 944 - 493. What is the answer?

Back

451

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the importance of lining up numbers by place value in subtraction?

Back

Lining up numbers by place value ensures that you subtract the correct digits from each other.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2